Open-Source-FPGA-Bitcoin-Miner/mine.tcl at master ...
How To Code A Bitcoin Miner CryptoCoins Info Club
Can anyone explain the bitcoin source code?
I have a friend that want to try mining bitcoin and I want to help him. I understand the operating principle of bitcoin, but how come there exists bitcoin and miners (such as cgminer)? Could anyone provide a guide to reading the source code so that I can understand it on a deeper level? P.S. I tried to look into the make file, but I am not an experienced programmer so I could not understand much, is that the right direction?
A field-programmable gate array (FPGA) is a chip that can be programmed to suit whatever purpose you want, as often as you want it and wherever you need it. FPGAs provide multiple advantages, including low latency, high throughput and energy efficiency. To fully understand what FPGAs offer, imagine a performance spectrum. At one end, you have the central processing unit (CPU), which offers a generic set of instructions that can be combined to carry out an array of different tasks. This makes a CPU extremely flexible, and its behaviour can be defined through software. However, CPUs are also slow because they have to select from the available generic instructions to complete each task. In a sense, they’re a “jack of all trades, but a master of none”. At the other end of the spectrum sit application-specific integrated circuits (ASICs). These are potentially much faster because they have been built with a single task in mind, making them a “master of one trade”. This is the kind of chip people use to mine bitcoin, for example. The downside of ASICs is that they can’t be changed, and they cost time and money to develop. FPGAs offer a perfect middle ground: they can be significantly faster than a CPU and are more flexible than ASICs. FPGAs contain thousands, sometimes even millions, of so-called core logic blocks (CLBs). These blocks can be configured and combined to process any task that can be solved by a CPU. Compared with a CPU, FPGAs aren’t burdened by surplus hardware that would otherwise slow you down. They can therefore be used to carry out specific tasks quickly and effectively, and can even process several tasks simultaneously. These characteristics make them popular across a wide range of sectors, from aerospace to medical engineering and security systems, and of course finance. How are FPGAs used in the financial services sector? Speed and versatility are particularly important when buying or selling stocks and other securities. In the era of electronic trading, decisions are made in the blink of an eye. As prices change and orders come and go, companies are fed new information from exchanges and other sources via high-speed networks. This information arrives at high speeds, with time measured in nanoseconds. The sheer volume and speed of data demands a high bandwidth to process it all. Specialized trading algorithms make use of the new information in order to make trades. FPGAs provide the perfect platform to develop these applications, as they allow you to bypass non-essential software as well as generic-purpose hardware. How do market makers use FPGAs to provide liquidity? As a market maker, IMC provides liquidity to buyers and sellers of financial instruments. This requires us to price every instrument we trade and to react to the market accordingly. Valuation is a view on what the price of an asset should be, which is handled by our traders and our automated pricing algorithms. When a counterpart wants to buy or sell an asset on a trading venue, our role is to always be there and offer, or bid, a fair price for the asset. FPGAs enable us to perform this key function in the most efficient way possible. At IMC, we keep a close eye on emerging technologies that can potentially improve our business. We began working with FPGAs more than a decade ago and are constantly exploring ways to develop this evolving technology. We work in a competitive industry, so our engineers have to be on their toes to make sure we’re continuously improving. What does an FPGA engineer do? Being an FPGA engineer is all about learning and identifying new solutions to challenges as they arise. A software developer can write code in a software language and know within seconds whether it works, and so deploy it quickly. However, the code will have to go through several abstraction layers and generic hardware components. Although you can deploy the code quickly, you do not get the fastest possible outcome. As an FPGA engineer, it may take two to three hours of compilation time before you know whether your adjustment will result in the outcome you want. However, you can increase performance at the cost of more engineering time. The day-to-day challenge you face is how to make the process as efficient as possible with the given trade-offs while pushing the boundaries of the FPGA technology. Skills needed to be an FPGA engineer Things change extremely rapidly in the trading world, and agility is the name of the game. Unsurprisingly, FPGA engineers tend to enjoy a challenge. To work as an FGPA engineer at a company like IMC, you have to be a great problem-solver, a quick learner and highly adaptable. What makes IMC a great fit for an FPGA engineer? IMC offers a great team dynamic. We are a smaller company than many larger technology or finance houses, and we operate very much like a family unit. This means that, as a graduate engineer, you’ll never be far from the action, and you’ll be able to make an impact from day one. Another key difference is that you’ll get to see the final outcome of your work. If you come up with an idea, we’ll give you the chance to make it work. If it does, you’ll see the results put into practice in a matter of days, which is always a great feeling. If it doesn’t, you’ll get to find out why – so there’s an opportunity to learn and improve for next time. Ultimately, working at IMC is about having skin in the game. You’ll be entrusted with making your own decisions. And you’ll be working side by side with super smart people who are open-minded and always interested in hearing your ideas. Market making is a technology-dependent process, and we’re all in this together. Think you have what it takes to make a difference at a technology graduate at IMC?Check out our graduate opportunities page.
Written by the CoinEx Institution, this series of jocular and easy to understand articles will show you everything you need to know about major cryptocurrencies, making you fully prepared before jumping into crypto! https://preview.redd.it/ryvcznqspe451.jpg?width=720&format=pjpg&auto=webp&s=5fa91e26288d7b0a624113ed21172cc9fd5624a3 Monero, or XMR for short, is an open-source cryptocurrency that is safe, reliable, private, and untraceable. It can run on Windows, Mac, Linux, and FreeBSD, and is known as one of the most private cryptocurrencies. In 2018, Monero already ranked 10th in terms of trading volume, with its market value beyond 1 billion US dollars, an evidence for its great fame in this field. By a special method in cryptography, Monero ensures that all transactions remain 100% irrelevant and untraceable. Perhaps after reading this article, you will understand why it is so special and popular in the increasingly transparent and traceable cryptocurrency circle (After all privacy comes first!). In fact, many large cryptocurrencies in the world are not anonymous. All transactions on Bitcoin and Ethereum are made public and traceable, which means that anyone can eavesdrop on transactions flowing into and out of the wallet. That has given rise to a new type of cryptocurrency called “privacy currency”! These “privacy currencies” hide encrypted transactions by adopting specific types of passwords. One typical example is Monero, one of the largest privacy cryptocurrencies in the world. Monero was created on April 18, 2014 under the name BitMonero, literally the combination of Bit (Bitcoin) and Monero (the “coin” in Esperanto). In five days, the community decided to change its name to Monero. Interestingly, Monero’s creators valued personal privacy and tried to behave in a low-key manner with pseudonyms instead of the real names. It is said that the Monero major contributor’s nickname is “thankful for today”, yet this guy has gradually disappeared from public view as Monero developed day by day. Unlike many cryptocurrencies derived from BTC, Monero is based on the CryptoNote protocol. It is also the first branch based on the Bytecoin of CryptoNote currency. Here is some information about Bytecoin: BCN, for short, is a decentralized cryptocurrency with a high degree of privacy; it has open-source codes that allow everyone to contribute to the development of the Bytecoin network; and the Bytecoin network provides global users with instant private transactions that are not traceable and at no additional cost. Yet, as a branch of BCN, Monero outshines its parent in reputation by being different in two ways. First, Monero’s target block time was reduced from 120 seconds to 60 seconds; second, the issuance speed was cut by 50% (which reverted to 120-second residence later, with the issuance time maintained and the reward for each new block doubled). By the way, during the fork, the Monero developers also found a lot of low-quality codes and then refactored them. (That is exactly what geeks will do) Monero’s modular code structure was also highly appreciated by Wladimir J. van der Laan, one of the core maintainers of Bitcoin. Monero values privacy, decentralization and scalability, and there are significant algorithm differences in blockchain fuzzification, which sets it apart from its peers. How private is it? Here are more details. 1. Safe and reliable For a decentralized cryptocurrency, decentralization means that its network is operated by users; transactions are confirmed by decentralized consensus and then recorded on the blockchain irrevocably. Monero needs no third party to guarantee the safety of funds; 2. Privacy protection Monero confuses all transaction sources, amounts, and recipients through ring signatures, ring confidential transactions, and invisible addresses. Apart from all the advantages of a decentralized cryptocurrency, it is by no means inferior in safeguarding privacy; 3. Unable to track The sender, the receiver and the transaction amount of all Monero transactions must be anonymous by default. The information on the Monero Blockchain cannot be matched with physical individuals or specific users, so there is no trace to track; 4. Scalable Everyone knows that Bitcoin’sability to process transactions has always been limited by the scalability issue; as we have mentioned before in the introduction of Bitcoin, the block size of 1MB makes things difficult. But Monero’s developers have created a system that allows the network to process more transactions when needed; what’s more, Monero does not have any “pre-set” restrictions on block size. Of course, this also means that some malicious miners may block the system with large blocks. To prevent this from happening, Monero has worked out countermeasures: the block reward penalty of the system. On October 18, 2018, Monero’s latest hard fork changed the consensus mechanism algorithm to CrypotoNight V8. In this hard fork, it introduced the BulletProff bulletproof protocol, which can also effectively reduce the transaction fee of miners without disclosing transactions It is said that Monero will issue about 18.4 million XMR in around 8 years. Moreover, it eclipses its counterparts in distribution — with no pre-mining or pre-sale, all block rewards will be left to miners by means of the POW mechanism. Here is the reward scheme of Monero in two stages:
Acceleration: mine 18132000 XMR before May 2022;
Deceleration: Deceleration starts right after 18132000 XMR are mined, and there will be a reward of 0.6XMR for each block mined afterwards. In this way, the overall supply will be kept on a small scale and decelerated.
Monero is also excellent in its development concept that is designed to be anti-ASIC from the very beginning. Here is a brief introduction to ASIC (Special Application Integrated Circuit). Due to the specificity of ASICs, specially designed ASICs can usually have much higher hashrate than general CPUs, GPUs, and even FPGAs — that makes hashrate excessively centralized and makes it vulnerable to the monopoly of single centralized institutions. Yet the cryptonight algorithm used by Monero allows most CPUs and even FPGAs to get involved and get mining rewards, instead of making GPU the only one that can efficiently mine. In other words, Monero’s core development team will modify the consensus mechanism algorithm and have a hard fork after some time to ensure its strength against ASIC and the monopoly of hashrate. However, although Monero has been designed against ASICs to avoid centralization, nearly 43% of its hashrate is still owned by 3 mining pools; in addition, it is not a BTC-based currency, making it even harder to introduce some elements. Of course, Monero is not that newbie-friendly, and thus has not been widely accepted. Yet each cryptocurrency has its own features. As long as Monero keeps improving its privacy, it will definitely attract increasing followers. If you are interested in Monero, welcome to CoinEx for exchange or trade.
As a global and professional cryptocurrency exchange service provider, CoinEx was founded in December 2017 with Bitmain-led investment and has obtained a legal license in Estonia. It is a subsidiary brand of the ViaBTC Group, which owns the fifth largest BTC mining pool, which is also the largest of BCH mining, in the world. CoinEx supports perpetual contract, spot, margin trading and other derivatives trading, and its service reaches global users in nearly 100 countries/regions with various languages available, such as Chinese, English, Korean and Russian. Website:https://www.coinex.com/ Twitter:https://twitter.com/coinexcom Telegram:https://t.me/CoinExOfficialENG Click hereto register on CoinEx!
SINOVATE is created for Innovation and it aims to keep bringing never before seen Innovations in the crypto market. What is Infinity Nodes, why different from Classical Masternode System? Infinity Nodes are groundbreaking evolved masternodes that solves the inflation problem. Traditional masternodes start with high ROI but with very large inflation and that inflation is what inevitably makes them fail.
What is IDS, why is it better than cloud storage? And size providers how to get/ earn SIN?
IDS = Incorruptible Data Storage. IDS is a peer-to-peer private networking system, which will permit transactions and storage between miners and Infinity Node owners. Competitors including Sia, Storj, BitTorrent and even IPFS solutions reward individuals for serving and hosting content on their hard drive space, which requires a 24/7 uptime for computers. User hard drives must remain open and the rewards received must justify the costs incurred for leaving computer online. In IDS, the private networking of decentralized storage relies solely on the SINOVATE Blockchain, with only node owners receiving rewards as compensation for utilising their hard drive resources to run an Infinity Node. Node owners will get rewards both from the Infinity Nodes and from storing confidential data. IDS will have 5 steps of evolution.
Step 1. DataSend. Users will be able to send documents and SMS only data between SIN wallets, just like sending their coins up to 1.5 Megabytes (MB). Two sending options will be provided to users, known as legal (256-bit) and illegal (1024-bit or higher). Data being sent in 256-bit will only be accessible by governments for decryption. However, data will still be indestructible for enterprise use. Data being sent in 1024-bit or higher will be impossible to decrypt even for governments, should this option be chosen.
Step2. Addition of voice and video data up to 3MB.
Step3. Increase space
Step4. Increase data storage
Step5. Unlimited blockchain based storage for eliminating centralized storage all over the world.
SINOVATE has 533 tp/s. How are you planning to use this as a use case?
Scalability is one of the biggest problems in cryptocurrencies. POS only or centralized cryptocurrencies have higher scalability but are not suitable for the original Satoshi plan. Satoshi Nakamoto’s dream was everybody to mine their own coins without being centralized so SINOVATE blockchain not only is the most scalable POW cryptocurrency but will also have much more increased scalability in the future. Mass adoption requires high scalability especially when it will be used in real life as a payment means. Are we going to see SINOVATE Payment System in the future? SINOVATE payment gateway will be released this year with high scalability and less than 3 seconds transaction times with the help of FlashSend.
What is SINOVATE aiming with X25X Algorithm?
SINOVATE formerly SUQA always aimed at the ordinary user starting with the X22i custom algorithm and upgraded to X25X to fight the big hardware companies so everyone can mine their own coin without letting ASIC,FPGA companies dominate the network. Algo Comparison Chart We are committed to remaining ASIC / FPGA resistant and such use an ever evolving algorithm, the latest variation named X25X launched with the last update. It is protected from difficulty attacks using Dark Gravity Wave v3 and raises the memory requirements compared to X22i bt a factor of five making it harder for ASIC / FPGA to implement.
What is Komodo dPOW , and when is the plan implementation on SINOVATE?
dPoW diagram KOMODO DPoW is a working and trusted 51 % Attack protection technology to prevent any kind of malicious attacks by the help of notarized data of Bitcoin, KOMODO and SINOVATE chain.
What is the current status on mobile wallets? We saw a mobile wallet trailer.
Mobile wallets will be released in July 2019 as a custom good looking wallet tailored to the specific needs of SIN Blockchain
What is the plan for adoption in real life SINOVATE?
Our team draws from a large diversity of skills from many areas of business and across many different industries. This allows us to design and hone the experience of interacting with the SINOVATE Blockchain at many levels, from developers, business leaders and operational levels, down to the end-user experience. This allows us to develop software and user experiences from the perspective of all involved, ensuring that the end user is the primary focus.
What is the current financial status on SINOVATE?
SINOVATE are transparent about the financial status of the foundation and the activity taken with funds. We regularly publish updates and the latest one for June is here.
What partnerships will there be in the future?
Besides the Masternodes related partnerships, SINOVATE partnered with KOMODO for the integration of dPoW 51% attack protection, which will be active at the end of July or early August 2019. As the foundation’s mission is to grow the space for all. We are happy to work with all projects and businesses both by learning from the great work others have undertaken and offering something back to other projects with our open source code.
With Governance what can it do for the community?
Decentralized governance is the future of any successful blockchain project, SINOVATE believes that blockchain will be ubiquitous in the underlying infrastructure and services in the future of everyday life. Having fair voting for developments, marketing and innovations of the SINOVATE chain will be very important for everyone. Hopefully that covers as an introduction, please fire away below with any questions you might have for us and feel free to join sinovate for the latest news! Edit - Thanks for the great questions and discussion. First round answered by our CEO u/cryplander, feel free to shoot more :)
0xBitcoin (0xBTC) is the first mineable ERC20 token on Ethereum. It uses mining for distribution, unlike all previous ERC20 tokens which were assigned to the contract deployer upon creation. 0xBTC is the first implementation of the EIP918 mineable token standard (https://eips.ethereum.org/EIPS/eip-918), which opened up the possibility of a whole new class of mineable assets on Ethereum. Without any ICO, airdrop, pre-mine, or founder’s reward, 0xBitcoin is arguably the most decentralized asset in the Ethereum ecosystem, including even Ether (ETH), which had a large ICO. The goal of 0xBitcoin is to be looked at as a currency and store of value asset on Ethereum. Its 21 million token hard cap and predictable issuance give it scarcity and transparency in terms of monetary policy, both things that Ether lacks. 0xBitcoin has certain advantages over PoW based currencies, such as compatibility with smart contracts and decentralized exchanges. In addition, 0xBTC cannot be 51% attacked (without attacking Ethereum), is immune from the “death spiral”, and will receive the benefits of scaling and other improvements to the Ethereum network.
GETTING 0xBITCOIN TOKENS
0xBitcoin can be mined using typical PC hardware, traded on exchanges (either decentralized or centralized) or purchased from specific sites/contracts.
or Traded OTC on the 0xBitcoin Discord or wherever traders see fit. ~more listings are in the works. Feel free to suggest 0xBTC to your favorite exchanges!
MINING IN A NUTSHELL
0xBitcoin is a Smart Contract on the Ethereum network, and the concept of Token Mining is patterned after Bitcoin's distribution. Rather than solving 'blocks', work is issued by the contract, which also maintains a Difficulty which goes up or down depending on how often a Reward is issued. Miners can put their hardware to work to claim these rewards, in concert with specialized software, working either by themselves or together as a Pool. The total lifetime supply of 0xBitcoin is 21,000,000 tokens and rewards will repeatedly halve over time. The 0xBitcoin contract was deployed by Infernal_Toast at Ethereum address: 0xb6ed7644c69416d67b522e20bc294a9a9b405b31
MINING IN MORE DETAIL (Gee-Whiz Info)
0xBitcoin's smart contract, running on the Ethereum network, maintains a changing "Challenge" (that is generated from the previous Ethereum block hash) and an adjusting Difficulty Target. Like traditional mining, the miners use the SoliditySHA3 algorithm to solve for a Nonce value that, when hashed alongside the current Challenge and their Minting Ethereum Address, is less-than-or-equal-to the current Difficulty Target. Once a miner finds a solution that satisfies the requirements, they can submit it into the contract (calling the Mint() function). This is most often done through a mining pool. The Ethereum address that submits a valid solution first is sent the 50 0xBTC Reward. (In the case of Pools, valid solutions that do not satisfy the full difficulty specified by the 0xBitcoin contract, but that DO satisfy the Pool's specified Minimum Share Difficulty, get a 'share'. When one of the Miners on that Pool finds a "Full" solution, the number of shares each miner's address has submitted is used to calculate how much of the 50 0xBTC reward they will get. After a Reward is issued, the Challenge changes.
HOW DIFFICULTY ADJUSTMENT WORKS
A Retarget happens every 1024 rewards. In short, the Contract tries to target an Average Reward Time of about 60 times the Ethereum block time. So (at the time of this writing): ~13.9 seconds \* 60 = 13.9 minutes If the average Reward Time is longer than that, the difficulty will decrease. If it's shorter, it will increase. How much longer or shorter it was affects the magnitude with which the difficulty will rise/drop, to a maximum of 50%. * Click Here to visit the stats page~ (https://0x1d00ffff.github.io/0xBTC-Stats) to see recent stats and block times, feel free to ask questions about it if you need help understanding it.
Presently, 0xBitcoin and "Alt Tokens" can be mined on GPUs, CPUs, IGPs (on-CPU graphics) and certain FPGAs. The most recommended hardware is nVidia graphics cards for their efficiency, ubiquity and relatively low cost. As general rules, the more cores and the higher core frequency (clock) you can get, the more Tokens you will earn!
Mining on nVidia cards:
Pascal (GTX 10x0) cards are usually the best choice due to their power efficiency. Maxwell-Generation 2 (GTX 9xx) cards are also a good choice and are often great overclockers, but they use more powegenerate more heat. Any fairly-recent nVidia card supporting CUDA should be capable of mining Tokens. It's possible to mine in OpenCL mode on nVidia devices, but It is preferable to use a CUDA for substantially better performance. (See Mining Software section.)
Mining on AMD cards:
AMD GPUs are quite capable of Token mining, though they can't achieve quite the same performance that nV/CUDA GPUs can at this time. Because of their typically-high memory bandwidth (especially cards with HBM/HBM2), it is possible to mine 0xBitcoin/ERC918 Tokens alongside a Video Memory-intensive algorithm like Ethash or Cryptonight! (See Mining Software section.)
Mining on IGPs (e.g. AMD Radeon and Intel HD Graphics):
This type of GPU is considerably less powerful than a discrete GPU, but is still capable of mining. They can supplement hashpower from other devices. The best performance should come from a chip with a larger number of Shader cores (like a Zen-based APU), but even typical Intel IGPs can submit shares and earn Tokens. (See Mining Software section.)
Clocks and Power Levels:
The algorithm used for 0xBitcoin and Alt-Token mining uses the faster memories in a GPU core instead of Video Memory. As a result, it is advisable to underclock the Memory, which will save a little power, reduce memory temperature and sometimes enable the GPU core to hit higher clock speeds with stability. A card's Power Limit and Core Voltage can be tweaked to attain the best efficiency for individual cards. ~Pascal cards (like GTX 10x0) are generally more temperature-sensitive when overclocked. Reducing Core temperature can often stabilize higher overclocks better than adding voltage can. Maxwell-Gen2 cards (like GTX 9xx) can usually be overclocked further at higher temperatures.
V4.x versions are a near-total 'Modern' C++ rewrite/redesign for 64-bit Windows, built for speed, ease-of-use and stability. It supports nVidia/CUDA devices and Pool Mining. Solo/CPU mining both planned. Features a fully-integrated GUI, numerous optimizations assembly functions for speed (nicknamed 'Hashburner'), and supports multiple GPUs running in a single instance since v4.1. Auto-Donation/devfee of 1.5% (default of 1.5%.) Under active development!
A fork of 0xBitcoin-Miner designed for enhanced speed and less invalid shares at the Pool level. It is somewhat older and is built using a combination of NodeJS/C++/CUDA. It has versions available for 64-bit Windows and Linux and runs from a command-line interface. Comes in multiple versions with 1, 1.5 or 2% "Auto-Donation"/devfee. Not under development at this time, but still relevant.
A Command-Line Interface miner that aims to provide functionality similar to that of "CCMiner" for other algorithms for 0xBitcoin and other ERC-918s. As such, it offers an API for integrating with Mining management software and integration with HiveOS & EthOS. It also supports OpenCL devices (such as AMD cards and Intel IGPs.) Has a minimum Auto-Donation/devfee of 1.5% (with a default of 2.0%.) Under active development!
AIOMiner is an All-In-One GPU Mining software for Windows that boasts support for over 55 different algorithms, is free to use, and eliminates the need to configure batch files through its easy to use interface.
TokenMiner is based upon Genoil Ethminer and was the first to add support for OpenCL devices (AMD GPUs/APUs.) It supports CPU and Pool/Solo mining from its command-line interface (in -C or -G, -S or -P modes.) It can also mine on nVidia/CUDA cards (in OpenCL mode, albeit with lesser performance.) Has a 1% "devfee" running in Pool Mode. This miner has since been forked for compatibility with some FPGAs!
v2.10.4 is an enhancement of the original 0xBitcoin-Miner with CUDA support added by Mikers and enhanced by Azlehria. "Nabiki" is a C++-only version, with no NodeJS code, which supports Pool Mining (just not Solo) and works on Windows 64-bit and Linux. Source code is available with pre-packaged binaries and a GUI in the works. Has a 2.5% "devfee". Under active development!
~Older Miners: Older and possibly-unsupported miner versions can be found at the above link for historical purposes and specific applications- including the original NodeJS CPU miner by Infernal Toast/Zegordo, the '1000x' NodeJS/C++ hybrid version of 0xBitcoin-Miner and Mikers' enhanced CUDA builds.
FOR MORE INFORMATION...
If you have any trouble, the friendly and helpful 0xBitcoin community will be happy to help you out. Discord has kind of become 0xBTC's community hub, you can get answers the fastest from devs and helpful community members. Or message one of the community members on reddit listed below.
Hi. I am one RVN hodler in Korean Crypto investment community. I understand that ravencoin has huge potential in term of becoming good assets platform, and making good profit in the future. But, I just want to hear thoughts from you guys about potential cons(risks) of ravencoin blockchain. Sorry for wrong English grammar. English is not my mother language :) 1) Absence of smart contract. I think smart contract is a key feature of future digital finance based on distributed ledger. But ravencoin is a Bitcoin code fork so has very limited smart contract function. White paper just mentioned about smart contract that it might be implemented on the 2nd layer. It seems that main developers' priority is developing other things mentioned in the roadmap, not smart contract. 2) Absence of Privacy. Corporates and financial institutions usually do not prefer every transaction being exposed to the public. They definitely want privacy when dealing in confidential contracts and transactions. Like smarts contract, adding privacy function seems not one of top development priority. Just calling for other developers to develop it. 3) x16r FPGA mining is on operation already and better FPGA chips are under development by hidden players. These equipments are not very available on the public yet. It means some mining whales are already exist, like Bitmain's ASIC mining in early days of Bitcoin. This phenomenon may lead to mining centralization like bitcoin blockchain in the future. 4) In the future, mining centralization may cause chain split, the hard fork. Because ravencoin is open-source public blockchain, what happpened in the bitcoin blockchain can also happen in ravencoin. As ravencoin is really focused on assets, which have financial values related, stability is very important. So things like chain split hard fork is big threat, and it can be the reason of hesitation of corporates and financial institution who are considering ravencoin blockchain for their business platform. Please share your thoughts. RVN Gazua!!
Hello, I’ve been trying to decide on a FPGA development board, and have only been able to find posts and Reddit threads from 4-5 years ago. So I wanted to start a new thread and ask about the best “mid-range” FGPA development board in 2018. (Price range $100-$300.) I started with this Quora answer about FPGA boards, from 2013. The Altera DE1 sounded good. Then I looked through the Terasic DE boards. Then I found this Reddit thread from 2014, asking about the DE1-SoC vs the Cyclone V GX Starter Kit: https://www.reddit.com/FPGA/comments/1xsk6w/cyclone_v_gx_starter_kit_vs_de1soc_board/ (I was also leaning towards the DE1-SoC.) Anyway, I thought I better ask here, because there are probably some new things to be aware of in 2018. I’m completely new to FPGAs and VHDL, but I have experience with electronics/microcontrollers/programming. My goal is to start with some basic soft-core processors. I want to get some C / Rust programs compiling and running on my own CPU designs. I also want to play around with different instruction sets, and maybe start experimenting with asynchronous circuits (e.g. clock-less CPUs) Also I don’t know if this is possible, but I’d like to experiment with ternary computing, or work with analog signals instead of purely digital logic. EDIT: I just realized that you would call those FPAAs, i.e. “analog” instead of “gate”. Would be cool if there was a dev board that also had an FPAA, but no problem if not. EDIT 2: I also realized why "analog signals on an FPGA" doesn't make any sense, because of how LUTs work. They emulate boolean logic with a lookup table, and the table can only store 0s and 1s. So there's no way to emulate a transistor in an intermediate state. I'll just have play around with some transistors on a breadboard. UPDATE: I've put together a table with some of the best options:
A very simple FPGA development board that plugs into a Raspberry Pi, so you have a "backup" hard-core CPU that can control networking, etc. Supports a huge range of pmod accessories. You can write a program/circuit so that the Raspberry Pi CPU and the FPGA work together, similar to a SoC. Proprietary bitstream is fully reverse engineered and supported by Project IceStorm, and there is an open-source toolchain that can compile your hardware design to bitstream. Has everything you need to start experimenting with FPGAs.
Xilinx Zynq 7-Series SoC - ARM Cortex-A9 processor, and Artix-7 FPGA. 125 IO pins. 1GB DDR2 RAM. Texas Instruments WiLink 8 wireless module for 802.11n Wi-Fi and Bluetooth 4.1. No LEDs or buttons, but easy to wire up your own on a breadboard. If you want to use a baseboard, you'll need a snickerdoodle black ($195) with the pins in the "down" orientation. (E.g. The "breakyBreaky breakout board" ($49) or piSmasher SBC ($195)). The snickerdoodle one only comes with pins in the "up" orientation and doesn't support any baseboards. But you can still plug the jumpers into the pins and wire up things on a breadboard.
Has one of the latest Xilinx SoCs. 2 GB (512M x32) LPDDR4 Memory. Wi-Fi / Bluetooth. Mini DisplayPort. 1x USB 3.0 type Micro-B, 2x USB 3.0 Type A. Audio I/O. Four user-controllable LEDs. No buttons and limited LEDs, but easy to wire up your own on a breadboard
Xilinx Zynq 7000 SoC (ARM Cortex-A9, 7-series FPGA.) 1 GB DDR3 RAM. A few switches, push buttons, and LEDs. USB and Ethernet. Audio in/out ports. HDMI source + sink with CEC. 8 Total Processor I/O, 40 Total FPGA I/O. Also a faster version for $299 (Zybo Z7-20).
Same as DE10-Standard, but not as many peripherals, buttons, LEDs, etc.
icoBoard ($100). (Buy it here.) The icoBoard plugs into a Raspberry Pi, so it's similar to having a SoC. The iCE40-HX8K chip comes with 7,680 LUTs (logic elements.) This means that after you learn the basics and create some simple circuits, you'll also have enough logic elements to run the VexRiscv soft-core CPU (the lightweight Murax SoC.) The icoBoard also supports a huge range of pluggable pmod accessories:
numato Mimas A7 ($149). An excellent development board with a Xilinx Artix 7 FPGA, so you can play with a bigger / faster FPGA and run a full RISC-V soft-core with all the options enabled, and a much higher clock speed. (The iCE40 FPGAs are a bit slow and small.)
I ordered a iCE40-HX8K Breakout Board to try out the IceStorm open source tooling. (I would have ordered an icoBoard if I had found it earlier.) I also bought a numato Mimas A7 so that I could experiment with the Artix 7 FPGA and Xilinx software (Vivado Design Suite.)
What can I do with an FPGA? / How many LUTs do I need?
VexRiscv is "A FPGA friendly 32 bit RISC-V CPU implementation." This is a RISC-V implementation written in SpinalHDL. VexRiscv has a lot of plugin and configuration options. The Murax SoC is a very light SoC that can run on an iCE40-HX8k (but probably not the 1k FPGA that only has 1,280 LUTs). The Briey SoC only runs on Xilinx or Altera FPGAs.
Ritocoin - a 100% community driven project based on Ravencoin
tl:dr: Ritocoin is a code fork of the Ravencoin codebase and continues to track future Ravencoin developments. The project was launched to provide a more community-oriented blockchain with the same functionality as Ravencoin, without a corporate overseer, and with a more flexible model for community participation and development. It’s intention is to be a hacker’s playground for innovative ideas. Specifications Proof-of-Work Algorithm: X21S Block Time: 60 seconds POW Block Reward: Smooth curve down Community fund: 1% first year Difficulty Retargeting: DGW-180 Maximum Supply: 6 months: 993,521,892 RITO 1 year: 1,227,448,858 RITO 5 years: 1,762,210,058 RITO 10 years: 1,820,404,381 RITO 50 years: 2,030,907,256 RITO 100 years: 2,293,707,246 RITO Infinite: 10 RITO per block in perpetuity Pre-mine: None Masternodes: Researching for use case Asset layer: Was enabled at height 50,000 Links Website /ritocoin Explorer Github Whitepaper twitter [ANN] X21S This hashing algorithm was created specifically for Ritocoin, and was designed to resist FPGAs, ASICs, and NiceHash. It is X16S (16 algorithms shuffled and hashed),, followed by 5 additional hashing algorithms: haval256, tiger, lyra2, gost512, and sha256. The inclusion of lyra2 brings numerous advantages, making parallelization of the algorithm practically impossible, with each step relying on the previous step having already been computed. It is a “friendly” algorithm that makes GPUs produce much less heat and uses less electricity during mining. Take your time to learn more about us in the below story of Ritocoin... The spirit of Bitcoin continues to inspire, empower and enable people around the globe. Ten years later, just as it seemed Bitcoin was being defined by commercial agents and regulated governance, that same free and independent spirit imbued the Ravencoin community. In ten short months, however, 30% of the Ravencoin project’s net hash comes from NiceHash and the looming impact of the imminent FPGA mining cards and X16R bitstreams certainly promises to shake up the dream of this GPU miner’s darling. Ravencoin’s fair launch genuinely inspired our developers and supporters. We admire the way Ravencoin came out swinging — fighting for fairness, an honest distribution of coins and a place where GPU miners could thrive. The asset layer attracted many more miners and investors to the pools. Many Ritocoin enthusiasts came from the Ravencoin community, and continue their association with that project. The whole crypto ecosystem should appreciate the work begun by Ravencoin. Obviously they continue to inspire and motivate us to this day. It’s the reason we took action. We decided to start our own project which focuses upon at least two pillars of decentralized networks in the crypto space: community governance and a fair distribution of coins. It is a core belief throughout Ritocoin that in order to successfully develop and maintain this hacker’s playground — a place where a broad range of ideas could be tried and allowed to flourish — these two ideals must be allowed to drive and guide our community. This deep focus on community choices creates a project flexible enough to support most ideas, and agile enough to define new frontiers. A mining network’s distributed ledger is defined by its technology. Like many in the broader crypto-mining community, we value the GPU for its accessibility. These processors are available for purchase all around the world without any legal restrictions. GPUs are vastly more accessible for hobbyists and miners to acquire. They can be shipped nearly anywhere around the globe, a nice benefit to the popular secondary market which has sprung up much to the chagrin of PC gamers. More constraints exist for the ASIC and FPGA miner. Laws in some parts of the world restrict people from using or buying ASIC and FPGA mining hardware. This alone is directly in confrontation with Ritocoin’s core values of decentralized stewardship and sovereignty. The GPU, in essence, is like your voice. Anyone with the means of acquiring one GPU should be able to have their voice heard. ASIC and FPGA mining devalues the GPU miner’s voice and silos that coin’s network away from the small scale and personal mining operator. A truly community driven project means each stakeholder, regardless of size of contribution to the network’s net hash, has an opportunity to build, vote and direct. If you are already familiar with our website, discord or whitepaper, you are probably aware that masternodes had been proposed as a feature of the network from the beginning. This opened the door to ongoing discussions in the Ritocoin community regarding ● A masternode’s true purpose ● What benefit they provide to the project ● How the benefit is realized ● The collateral This discussion, governed entirely by stakeholders across the extended network yielded a defining moment for our vision of flexibility. We have not yet found the potential utility of masternodes, however, the conversation has not reached an extent to where we could abandon the idea. To quote one of our developers during this discussion on our Discord:
“Just want to give a reminder here that even though masternodes are on the roadmap, it is not set in stone. This coin belongs to the community and we will do what we as a community want to do. If we conclude that we want to take this coin a different direction than masternodes, then that is what we’ll do.” --traysi
We are all volunteers at Ritocoin. Our moderators and community leaders try to give immediate support to all users that require it. Contact us in Discord or Telegram, not only for support, but, proposing new ideas, revising old ones and just so you can find a place to get together and find people to hang out with. You are well within your rights to enjoy yourself at any given moment, and, should you feel so inclined to begin working with the team, we just so happen to be looking for ambitious individuals that see themselves as being part of a greater vision, are inspired by change, and inspired to be the change they want to see making things better in this world. Join us in a space where your ideas to build something great can become a reality. We are eager to know what you think is best for the future of Rito. What steps would you take to become more resilient, stronger, fair and decentralized? Because at the end of the day, like it or not, love it or leave it.. this is your coin, too. You can become a significant part of this project. We will help you further develop the role you wish to fill in the cryptocurrency space — influencer, developer, analyst, you name it. This is not a just-for-developer’s playground. We want the enthusiasts. We want the perplexed and the rabbit-hole divers. This is the coin for everyone who is trying to find their place on the path that Satoshi began unfolding in 2008 after the collapse of the housing market rippled out into the subsequent crash of global markets. That’s why we have Bitcoin, remember? Be your own bank. This is why Satoshi and Bitcoin.org kept their software open source. It’s up to us to keep the torch ablaze. Community funds For the first year, about 1% of mined coins are set aside into a developers fund that is used to provide bounties to the community developers who make substantial development contributions to the Ritocoin ecosystem. We have already paid out numerous bounties for important work that has already benefits Ritocoin in substantial ways. We also have another donation-driven community fund that has recently been put together for the purposes of doing fun contests and things like that. Cooperation and collaborations We have discovered a number of fatal flaws in the original Ravencoin codebase and worked with the Ravencoin developers to get those fixed in both Ritocoin and Ravencoin. This work has benefitted Ravencoin in numerous ways and we look forward to a long time of collaboration and cooperation between us and them. Many members of the Safecoin team are also in our discord group, and have collaborated with us in shaping the future decisions of Ritocoin. We have several thousand members in our group and they represent all walks of cryptocurrency life. We invite all coin developers, miners and enthusiasts to join our discord and be a part of this coin that truly belongs entirely to the community. Block reward A couple weeks ago we met for a scheduled meeting in our discord group and had a lengthy conversation about the block reward. Our block reward started at 5,000 RITO per block (every 60 seconds) just like Ravencoin. This extremely high number of coins coupled with the high profitability of mining led to unforeseen consequences with pools auto-exchanging the coin into bitcoin. This dumping by non-community miners had a very negative impact on the community sentiment and morale, as we watched the exchange price plunge. We looked at other coins and realized that this fate has befell many other coins with high block rewards. Following much discussion, we decided to change the reward structure. Starting around March 19th the block rewards will start to slowly go down in a curve until it reaches 1,000. Then the reduction will be even more slowed down with block rewards exponentially dropping at periodic intervals. We have posted charts on our website that shows what the long-term effects of our reward reducing algorithms will be. As a miner, the next 2 months will be a great time to mine and hold, while the block reward is still fairly high. We encourage all miners and cryptocurrency enthusiasts to take advantage of the current favourable block reward and build a nice holding for yourself. Then join the community and be a part of the fun we’re having with this project. This post was prepared by a collaboration of multiple Ritocoin members and was posted to reddit by the core developer Trevali, who posts to reddit under the ritocoin username and will be very happy to answer any questions anybody may have about our project. Traysi (well known in the Ravencoin community) is also an active Ritocoin developer and may come to this thread if needed. We welcome any questions from any of you regarding our project!
It can be very time consuming to keep up to date on a single blockchain. If you just heard about NEO a few weeks ago it would be impossible catch up on past occurrences. I’m going to try and simplify the past, present and future as much as I can into one well thought-out post. [Note: This Post is at max characters (40,000), some information will be left out]
Ontology $ONT (Partnership with NEO) Ontology Network (ONT) is a blockchain/distributed ledger network which combines distributed identity verification, data exchange, data collaboration, procedure protocols, communities, attestation, and various industry-specific modules. Together this builds the infrastructure for a peer-to-peer trust network which is cross-chain, cross-system, cross-industry, cross-application, and cross-device.
The Key $TKY (Upcoming ICO ) (strategic cooperation with NEO) THEKEY is a Decentralized Ecosystem of Identity Verification Tool Using National Big-data and Blockchain. THEKEY team is now developing second generation on-line identify verification technology. NEO Smart Economy = Digital Asset + Smart Contract + Digital Identity, while digital identity is an indispensable element. With NEO technical support, the strategic corporation between THEKEY and NEO will provide better protection to your digital asset. https://www.thekey.vip/ https://www.reddit.com/NEO/comments/7areac/ama_on_9th_nov_thekey_a_decentralized_ecosystem/
High Performance Blockchain $HPB (ICO Completed) HPB is a new blockchain architecture, positioned as an easy-to-use, highperformance blockchain platform. It aims to extend the performance of distributed applications to meet real world business needs. This is achieved by creating an architecture similar to an API operating system. The software architecture provides accounts, identity and authorization management, policy management, databases, and asynchronous communication on thousands of CPUs, FPGAs or clustered program schedulers. This blockchain is a new architecture that can support millions of transactions per second and support authorizations within seconds. http://www.gxn.io/en.html http://www.gxn.io/files/hpb_white_paper_en.pdf https://www.allcoin.com/markets/HPB-BTC/0/
City of Zion (CoZ) is an independent group of open source developers, designers and translators formed to support the NEO BlockChain core and ecosystem. CoZ primarily operates through the community Slack and CoZ Github, central places where the community shares knowledge and contributes to projects. CoZ is neither a corporation, nor a consulting firm or a devshop / for-hire group. Members https://imgur.com/a/Gc9jT CoZ aims to be low barrier of entry, the process is straightforward:
Join the channel #develop.
Fork or create a project.
Publish as open source.
After a couple of contributions a CoZ council member will invite you to the proper channel for your contributions.
Receive rewards and back to 3.
Unit testing - Ongoing effort to implement code coverage for the core Integration testing - Tools for automated testing, performance metrics and functionality validation on private test nets Continuous integration - Automated multi-platform testing of all pull requests at GitHub. Deployment pipeline - Automated tools and processes to ensure fast and reliable updates upon code changes New C# implementation (NEO2) - Improve code quality, speed & testability
The competition will open on November 20, 2017 and close at 11:59 PM Beijing time (GMT+8), March 10, 2018. Please sign up and submit your work before the deadline.
Participants are required to develop on the NEO blockchain. Please refer to github.com/neo-project and docs.neo.org for relevant codes and technical documents.
During the competition, developers are free to collaborate and to submit their work as a team.
Teams or individuals who fail to submit their work before 11:59 PM Beijing time (GMT+8), March 10, 2018 will not be eligible for prizes.
Your submission must contain executable programs and codes.
$150,000 First prize(1 team) $50,000 Second prize(2 teams) $30,000 Third prize(3 teams) $15,000 Award of merit(10 teams)
A judging panel made up of NEO founder Da Hongfei,NEO Founder & Core Developer Erik Zhang, CoZ founder Fabio, Elastos founder Chen Rong,ONT Founder Li Jun and experts from Microsoft China will select 16 winners out of all the contestants for a bounty pool worth a total of USD 490,000.
Total sign-ups :194 Data collected as of 2017/11/28
Digital Assets Digital assets are programmable assets that exist in the form of electronic data. With blockchain technology, the digitization of assets can be decentralized, trustful, traceable, highly transparent, and free of intermediaries.
Digital Identity Digital identity refers to the identity information of individuals, organizations, and other entities that exist in electronic form. Our verification of identity when issuing or using digital identities includes the use of facial features, fingerprint, voice, SMS and other multi-factor authentication methods.
Smart Contracts The NeoContract smart contract system is the biggest feature of the seamless integration of the existing developer ecosystem. Developers do not need to learn a new programming language but use C#, Java and other mainstream programming languages in their familiar IDE environments (Visual Studio, Eclipse, etc.) for smart contract development, debugging and compilation. NEO's Universal Lightweight Virtual Machine, NeoVM, has the advantages of high certainty, high concurrency, and high scalability. The NeoContract smart contract system will allow millions of developers around the world to quickly carry out the development of smart contracts.
Economic Model NEO has two native tokens, NEOand NeoGas NEO represents the right to manage the network. Management rights include voting for bookkeeping, NEO network parameter changes, and so on. The minimum unit of NEO is 1 and tokens cannot be subdivided. GAS is the fuel token for the realization of NEO network resource control. The NEO network charges for the operation and storage of tokens and smart contracts, thereby creating economic incentives for bookkeepers and preventing the abuse of resources. The minimum unit of GAS is 0.00000001.
Distribution Mechanism NEO's 100 million tokens are divided into two portions. The first portion is 50 million tokens distributed proportionally to supporters of NEO during the crowdfunding. This portion has been distributed. The second portion is 50 million NEO managed by the NEO Council to support NEO's long-term development, operation and maintenance and ecosystem. The NEO in this portion has a lockout period of 1 year and is unlocked only after October 16, 2017. This portion will NOT enter the exchanges and is only for long-term support of NEO projects. The plans for it are as below: ▪ 10 million tokens (10% total) will be used to motivate NEO developers and members of the NEO Council ▪ 10 million tokens (10% total) will be used to motivate developers in the NEO ecosystem ▪ 15 million tokens (15% total) will be used to cross-invest in other block-chain projects, which are owned by the NEO Council and are used only for NEO projects ▪ 15 million (15% total) will be retained as contingency ▪ The annual use of NEO in principle shall NOT exceed 15 million tokens
GAS distribution GAS is generated with each new block. The initial total amount of GAS is zero. With the increasing rate of new block generation, the total limit of 100 million GAS will be achieved in about 22 years. The interval between each block is about 15-20 seconds, and 2 million blocks are generated in about one year. According to this release curve, 16% of the GAS will be created in the first year, 52% of the GAS will be created in the first four years, and 80% of the GAS will be created in the first 12 years. GAS will be distributed proportionally in accordance with the NEO holding ratio, recorded in the corresponding addresses. NEO holders can initiate a claim transaction at any time and claim these GAS tokens at their holding addresses.
Consensus mechanism: dBFT The dBFT is called the Delegated Byzantine Fault Tolerant, a Byzantine fault-tolerant consensus mechanism that enables large-scale participation in consensus through proxy voting. The holder of the NEO token can, by voting, pick the bookkeeper it supports. The selected group of bookkeepers, through BFT algorithm, reach a consensus and generate new blocks. Voting in the NEO network continues in real time, rather than in accordance with a fixed term.
Cross-chain assets exchange agreement NeoX has been extended on existing double-stranded atomic assets exchange protocols to allow multiple participants to exchange assets across different chains and to ensure that all steps in the entire transaction process succeed or fail together. In order to achieve this function, we need to use NeoContract function to create a contract account for each participant. If other blockchains are not compatible with NeoContract, they can be compatible with NeoX as long as they can provide simple smart contract functionality.
Cross-chain distributed transaction protocol Cross-chain distributed transactions mean that multiple steps of a transaction are scattered across different blockchains and that the consistency of the entire transaction is ensured. This is an extension of cross-chain assets exchange, extending the behavior of assets exchange into arbitrary behavior. In layman's terms, NeoX makes it possible for cross-chain smart contracts where a smart contract can perform different parts on multiple chains, either succeeding or reverting as a whole. This gives excellent possibilities for cross-chain collaborations and we are exploring cross-chain smart contract application scenarios.
Distributed Storage Protocol: NeoFS NeoFS is a distributed storage protocol that utilizes Distributed Hash Table technology. NeoFS indexes the data through file content (Hash) rather than file path (URI). Large files will be divided into fixed-size data blocks that are distributed and stored in many different nodes
Anti-quantum cryptography mechanism: NeoQS The emergence of quantum computers poses a major challenge to RSA and ECC-based cryptographic mechanisms. Quantum computers can solve the large number of decomposition problems (which RSA relies on) and the elliptic curve discrete logarithm (which ECC relies on) in a very short time. NeoQS (Quantum Safe) is a lattice-based cryptographic mechanism.
Reasons for choosing dBFT over PoW and PoS
With the phenomenal success of Bitcoin and its increasing mainstream adoption, the project’s unbounded appetite for energy grew accordingly. Today, the average Bitcoin transaction costs as much energy as powering 9.3 average American homes for 1 day. https://digiconomist.net/bitcoin-energy-consumption#assumptions This mind boggling amount of energy is not, as it is commonly believed, being wasted. It is put to good use: securing the Bitcoin network and rendering attacks on it infeasible. However, the cost of this security mechanism and its implications for an increasingly warming and resource hungry planet led almost the entire crypto industry to the understanding that an alternative has to be found, at least if we’re interested in seeing blockchain technology gaining overwhelming mainstream adoption. The most popular alternative to PoW, used by most alternative cryptocurrency systems, is called Proof-of-Stake, or PoS. PoS is highly promising in the sense that it doesn’t require blockchain nodes to perform arduous, and otherwise useless, cryptographic tasks in order to render potential attacks costly and infeasible. Hence, this algorithm cuts the power requirements of PoS blockchains down to sane and manageable amounts, allowing them to be more scalable without guzzling up the planet's energy reserves. As the name suggests, instead of requiring proof of cryptographic work, PoS requires blockchain nodes to proof stake in the currency itself. This means that in order for a blockchain node to be eligible for a verification reward, the node has to hold a certain amount of currency in the wallet associated with it. This way, in order to execute an attack, a malevolent node would have to acquire the majority of the existing coin supply, rendering attacks not only costly but also meaningless, since the attackers would primarily harm themselves. PoS, as well as PoW, simply cause the blockchain to fork into two alternative versions if for some reason consensus breaks. In fact, most blockchains fork most of the time, only to converge back to a single source of truth a short while afterwards. By many crypto enthusiasts, this obvious bug is very often regarded as a feature, allowing several versions of the truth to survive and compete for public adoption until a resolution is generated. This sounds nice in theory, but if we want to see blockchain technology seriously disrupt and/or augment the financial sector, this ever lurking possibility of the blockchain splitting into two alternative versions cannot be tolerated. Furthermore, even the fastest PoS blockchains out there can accomodate a few hundred transactions per second, compare that to Visa’s 56,000 tx/s and the need for an alternative becomes clear as day. A blockchain securing global stock markets does not have the privilege to fork into two alternative versions and just sit and wait it out until the market (or what’s left of it) declares a winner. What belongs to whom should be engraved in an immutable record, functioning as a single source of truth with no glitches permitted. After investigating and studying the crypto industry and blockchain technologies for several years, we came to the conclusion that the delegated Byzantine Fault Tolerance alternative (or dBFT) is best suited for such a system. It provides swift transaction verification times, de-incentivises most attack vectors and upholds a single blockchain version with no risk of forks or alternative blockchain records emerging - regardless of how much computing power, or coins an attacker possesses. The term Byzantine Fault Tolerance (BFT) derives its name from the Byzantine Generals problem in Game Theory and Computer Science, describing the problematic nature of achieving consensus in a distributed system with suboptimal communication between agents which do not necessarily trust each other. The BFT algorithm arranges the relationship between blockchain nodes in such a way that the network becomes as good as resilient to the Byzantine Generals problem, and allows the system to remain consensus even if some nodes bare malicious intentions or simply malfunction. To achieve this, Antshare’s version of the delegated BFT (or dBFT) algorithm acknowledges two kinds of players in the blockchain space: professional node operators, called bookkeeping nodes, who run nodes as a source of income, and users who are interested in accessing blockchain advantages. Theoretically, this differentiation does not exist in PoW and most PoS environments, practically, however, most Bitcoin users do not operate miners, which are mostly located in specialized venues run by professionals. At Antshares we understand the importance of this naturally occurring division of labor and use it to provide better security for our blockchain platform. Accordingly, block verification is achieved through a consensus game held between specialized bookkeeping nodes, which are appointed by ordinary nodes through a form of delegated voting process. In every verification round one of the bookkeeping nodes is pseudo-randomly appointed to broadcast its version of the blockchain to the rest of the network. If ⅔ of the remaining nodes agree with this version, consensus is secured and the blockchain marches on. If less than ⅔ of the network agrees, a different node is appointed to broadcast its version of the truth to the rest of the system, and so forth until consensus is established. In this way, successful system attacks are almost impossible to execute unless the overwhelming majority of the network is interested in committing financial suicide. Additionally, the system is fork proof, and at every given moment only one version of the truth exists. Without complicated cryptographic puzzles to solve, nodes operate much faster and are able to compete with centralized transaction methods. https://www.econotimes.com/Blockchain-project-Antshares-explains-reasons-for-choosing-dBFT-over-PoW-and-PoS-659275
It is important to note the technical difference between Onchain and NEO. Onchain is a private VC-backed company with over 40 employees. NEO is a public platform with different community-led groups contributing to this public project. There exists NEO council comprised of the original NEO creators, employees from Onchain, full time NEO council members and there is also the first Western based group called City of Zion. Onchain, a Shanghai-based blockchain R&D company, first started developing Antshares in February of 2014 which will eventually become the foundation of DNA. Onchain was founded by CEO Da HongFei and CTO Erik Zhang in response to the attention from private companies garnered by the development of Antshares, China’s first public blockchain. In contrast to the weeks-old start-ups launching ICOs that is happening currently in the blockchain world, it took them 22 long months of R&D to even begin providing services to their first customers. Finally, in April 2016, the first whitepaper on consensus protocol from China was born — the dBFT (delegated Byzantine Fault Tolerance) protocol. 2016 was a busy year for Onchain and they really picked up the pace that year. Other than continuing the development of Antshares, brushing shoulders with Fortune 500 companies, Onchain became the first Chinese blockchain company to join Hyperledger — an open source blockchain project started by the Linux Foundation specifically focusing on the development of private and consortium chains for businesses. In June of 2016, during the first of many future partnerships with Microsoft China, Onchain founded Legal Chain specifically targeting the inadequacies of the digital applications within the legal system. In 2005, (Digital Signature Act) was passed into national law which permitted an effective digital signatures to gain the same legal rights as a real signature. In company with Microsoft China, they are also aiming to integrate the technology with Microsoft’s face and voice recognition API function to kick start this digital revolution within the legal system. At the same time, a partnership was formed with FaDaDa, a third-party platform for electronic contracts that has processed over 27 million contracts to date, to provide secure evidence storage with DNA. If that’s not enough, they were also voted as KPMG’s top 50 Fintech Company in China and established a relationship with the Japanese Ministry of Economy, Trade and Industry which led to the recent tour to Japan. Finally, at the end of 2016 they announced a partnership with Alibaba to provide attested email service for Ali Cloud with Legal Chain where it provides a proof-of-existence for a blockchain-powered email evidence repository for enterprise-level use. Fosun Group, China’s largest private conglomerate, have recently invested into Onchain in order to apply DNA across all of its businesses. Currently, Fosun International has a market cap of 102.98 billion dollars on the Hong Kong Stock Exchange and that is only its international branch. The role of Onchain so far is reminiscent of Ethereum’s EEA in addition to a stronger emphasis of governmental cooperation. Onchain has identified the shortcomings of present laser focus of hype on public platforms such as NEO and Ethereum and addressing that with DNA. DNA envisions a future where a network of assorted, specifically designed blockchains serving private enterprises, consortiums, government and the public communicating with each other forming an interconnected blockchain network. This is the goal of DNA — infiltrating every little inefficient niche that had no better alternatives before the invention of blockchain. What is especially critical to remember during this explosive time of hype driven partly by the obscene degree of greed is that not every little niche that blockchain can fill will be holding its own little ICO. Some of those efficiencies gained will simply be consumed by companies privately or by public systems such as the legal system.
August 8th to August 12th From August 8th to August 12th, 2017, the NEO core team, led by founder & CEO Da Hongfei will travel to Japan to explore the forefront of Japan's Blockchain innovation. This trip represents the first in a series of trips around the world with the goal to foster international cooperation's and to keep up with the fast pace in Blockchain innovation. Starting in Japan, the NEO core team will visit famous local Blockchain research institutions and active communities to engage in bilateral communication. NEO will meet with Japanese tech-celebrities to gain insights about the latest developments in the Japanese Blockchain and digital currency community. Additionally, Japanese local tech media will conduct an interview allowing NEO to present its development status and its latest technological innovations.
November 27th, 2017 China&USA NEO blockchain meetup in Manhattan NYC
November 30th, 2017 Meetup San Francisco: The Future Of Blockchain With The Founders of NEO, Elastos, & Stellar
December 4th, 2017 NEO attending Blockchain World Conference in Bangkok:
December 7th, 2017 NEO meetup Singapore:
December 13th, 2017 NEO meetup at Cambridge:
Networks proves itself with the first ICO
ICOs, on other platforms such as Ethereum, often resulted in a sluggish network and transaction delays. While NEO’s dBFT consensus algorithm is designed to achieve consensus with higher efficency and greater network throughputt, no amount of theoretical calculations can simulate the reality of real-life conditions.
Smart Contract Invocations: A total of 13,966 smart contracts invocations were executed on the NEO network over this time period, of which, nearly all called the RPX smart contract method mintTokens. A total of 543,348,500 RPX tokens were successfully minted and transferred to user accounts, totalling 10,097 smart contract executions.
Refunded Invocations: A total of 4182 refund events were triggered by the smart contract method mintTokens. (Note: RPX has stated that these refunds will be processed within the next two weeks.)
Crowdsale Statistics: A successful mintTokens execution used around 1043 VM operations, while an execution that resulted in a refund used 809 VM operations. Within the hour and six minutes that the token sale was active, a total of 12,296,409 VM operations were executed. A total of 9,575 unique addresses participated in the RPX ICO. Half of these, approximately 4,800 unique addresses, participated through CoZ’s Neon wallet. The top 3 blocks with the most transactions were block 1445025 (3,242 transactions), block 1444902 (2,951 transactions), and block 1444903 (1609 transactions).
Conclusion on Network Performance At the moment, the consensus nodes for the NEO network are operated by the NEO Council in China. By Q1 2018, NEO Council aims to control less than two-thirds of the consensus nodes. We are pleased to note that the NEO network continuted to operate efficiently with minimal network impact, even under extreme network events. Block generation time initially slowed down to 3 minutes to process the largest block, but quickly recovered to approximately 25 seconds. Throughout the entire RPX ICO, consensus nodes were able to achieve consensus and propagate new block transactions to the rest of the network. In closing, while we consider this performance to be excellent, NEO Council and City of Zion areworking closely together on upgrades, that will increase the throughputs of the NEO network.
Members and governance of Hyperledger: Early members of the initiative included blockchain ISVs, (Blockchain, ConsenSys, Digital Asset, R3, Onchain), well-known technology platform companies (Cisco, Fujitsu, Hitachi, IBM, Intel, NEC, NTT DATA, Red Hat, VMware), financial services firms (ABN AMRO, ANZ Bank, BNY Mellon, CLS Group, CME Group, the Depository Trust & Clearing Corporation (DTCC), Deutsche Börse Group, J.P. Morgan, State Street, SWIFT, Wells Fargo), Business Software companies like SAP, Systems integrators and others such as: (Accenture, Calastone, Credits, Guardtime, IntellectEU, Nxt Foundation, Symbiont). The governing board of the Hyperledger Project consists of twenty members chaired by Blythe Masters, (CEO of Digital Asset), and a twelve-member Technical Steering Committee chaired by Christopher Ferris, CTO of Open Technology at IBM. http://www.8btc.com/onchain-hyperledger https://en.wikipedia.org/wiki/Hyperledger
“As a leading open-source contributor in China’s blockchain community, Onchain shares the same values as the Linux Foundation and the Hyperledger project intrinsically. We believe international collaboration plus local experience are key to the adoption of distributed ledger technology in China; we are also very excited to see other Chinese blockchain startups join Hyperledger and look forward to adding our combined expertise to the project.” Da Hongfei, Founder and CEO of Onchain https://hyperledger.org/testimonials/onchain
"There is no direct cooperation between Alibaba and NEO/Onchain, other than their mailbox service is using Law Chain to provide attested email service. In terms of Microsoft, yes we have cooperation with Microsoft China because NEO is built with C# and .NET Core, and NeoContract is the first in the world to support writing smart contract with C#"
"We have pretty good communication with government, with regulators. They don't have any negative impression with NEO and they like our technology and the way we deal with things. Regulation is not an issue for us"
“Before they started cleaning up the market, I was asked for information and suggestions” “I do not expect the government to call me in the short-term and say, ‘Let’s use NEO as the blockchain technology infrastructure of China.’ But in the medium term? Why not? I think it’s possible.”
Decentralization of consensus nodes ▪ P2P Network optimization – Network optimizations to ensure fast block generation after decentralization. ▪ Voting Algorithm Optimization – Adjustments in voting algorithm to prevent identified attack vectors. ▪ Candidate List Website – Published list of candidates so that voters know who they are voting for. ▪ NEO Council Consensus Node < 2/3 – NEO Council shall operate less than two thirds of consensus nodes by the end of quarter 1, 2018.
Our original plan was to start decentralize in Q1 2018. We are however growing faster than expected and cannot accept the risk with being as centralized as we currently are. The conclusion is that we re-prioritize and start the process of decentralizing today. We believe that NEO community groups and exchanges will be suitable to run consensus nodes; community groups already know the technology, and exchanges are already running full nodes with high uptime and monitoring. We welcome interested parties to reach out to us on [email protected]. A NEP to encourage voting will be presented in the coming weeks. https://neo.org/blog/Details/3016
Universal Data Format for Wallet/Node Prog. ▪ NEP2 – Private Key Encryption/Decryption (2017Q4) - Method for encrypting and encoding a passphrase-protected private key. ▪ NEP3 – Universal Data Format (2017Q4) – Standard data format to allow easier wallet and node programming. https://neo.org/en-us/blog/details/65
Promotion/Ecosystem ▪ Globally Legal Token-raising Framework (2017Q4) – Following government interest to regulate ICO’s, NEO will complete a framework to raise tokens legally in all major markets by the end of 2017. ▪ NEO DevCon 1 (2017Q4) – First NEO Development Conference! More details at later date. ▪ CoZ Funding (2017Q4) – Continuous funding plan for CoZ covering next 5 years. ▪ Seed Projects (2017Q4) – First seed projects to be cross-invested with the dedicated NEO pool. https://neo.org/en-us/blog/details/65
A miner that makes use of a compatible FPGA Board. The miner works either in a mining pool or solo.. This is the first open source FPGA Bitcoin miner. It was released on May 20, 2011. Description. BTCMiner is a Bitcoin Miner software which allows you to make money with your ZTEX USB-FPGA Module. Since these FPGA Boards contain an USB interface no additional hardware (like JTAG programmer) is required and low cost FPGA-clusters can be build using standard USB hubs. Bitcoin miner software with multi-threaded multi-pool gpu, fpga and asic mining support. Bitcoins are a digital currency, exchanged freely against all other currencies. coins may be issued by everyone, one just needs considerable computer power - and luck. to even out rewards for one's contribution, many initiative have forms to provide pools ... A miner that makes use of a compatible FPGA Board.The miner works either in a mining pool or solo.. This is the first open source FPGA Bitcoin miner.It was released on May 20, 2011. The latest version of this software is Bitcoin Miner 1.27.0. BTCMiner is an Open Source Bitcoin Miner for ZTEX USB-FPGA modules 1.5. BTCMiner comes with the ... Bitcoin Gold Developer Under Scrutiny For Allegedly Hiding Mining Code The bitcoin gold development team is under fire once again as the currencys mining community has discovered a hard ...
FPGA Implementation of distance Measurement with Ultrasonic Sensor
A new architecture, namely, Multiplier-and accumulator (MAC) based Radix-4 Booth Multiplication Algorithm for high-speed arithmetic logics have been proposed and implemented on Spartan6 FPGA ... The main objective of project is Find distance of the obstacle in front of any automation system, a Spartan3 FPGA Image Processing kit is used to measure trigger input and display the echo output ... This design accomplished Tic-Tac-Toe game on Spartan3 FPGA Image Processing kit in VHDL. Firstly, designing the circuits and wiring on experiment board. Secondly, designing the algorithm and ... The Median filter is an effective method for the removal of impulse-based noise from the images. This paper suggests an optimized architecture for filter implementation on Spartan3 FPGA Image ... In this video we hack the GameBoy cartridge protection by building our own GameBoy cartridge using an FPGA! You can find the FPGA source-code on my Github ... - FPGA Board: Digilent Arty 7 - Level ...